Handsaw



Der 3,1929 K. A. wAHLBl-:RG ET AL HANDSAW Filed April 28, 1928 V., H, mo A e T hmmJN .L IHCE amv wlnN ral ww mf 9u U Am 'nd QV KUT O d A Y .m.o U G lill patented Den. 3, 1929 MMR@ STABS PTEN FFICE KARL AUG-STWAHLBERG AND GUSTAV ADOLF VOLMER WAHLBERG, F HESSELBY VILLASTAD, SWEDENHANDSAW Application filed April 28, 1928, Serial No. 273,532, and inSweden March 28, 1927.

rilhis invention relates to an improvement in such hand-saw frames,which consist of two arms, which are connected by means of aconnecting-piece and Which on one side of the connecting-piece areprovided with a sivingably arranged lever intended tor the tensioning ofthe saw-blade.

lln the accompanying drawing' is shown an embodiment ot' the invention,Figi'. i shoi s 0 from the side a hand-saw trame provided with theimprovements accordingn to the invention. Fig. 2 is a section on theline 2 2 in Fig. l and Fig. 3 is a section on the line 3 3 in Fig. lshown in larger scale. Figure 5 t is a transverse sectional view takenon lines 4 4 of Figure 1.

ln the drawing', l indicates the arms provided With the saw-claws 3,Which arms are connected by means of the connecting-piece o 5.riceording1 to the invention the conne-et ing-piece 5 is furtherprovided with a delongitudinal grooves l (Fig. 3) for holding additionalloose saw-blades 2. yl`he connecting-piece 5 is tui-ther provided With adepression 6, Fig. 3, in which the lever 'for the tensioning ot the sawblade is provided with oppositely disposed eyes 8 at its upper end toreceive tensioning Wires 9 Which are connected at their opposite ends tothe arms 4l o as illustrated in Figures l and 4, the lever Z being swungabout the Wires to twist them, and thereafter catchingv its :tree end inthe depression and being held there it thereby prevents the saw-bladesin the groove from falling out of them.

rllhe arrangementmay oi course be modified in several respects Withinthe scope of the invention, and especially the number oi the grooves lmay be varied Without deviat ingr i'rom the principle oit the invention.

llaring` now described yonr invention, what we claim as new and desireto secure by Letters Patent is:

fin improvement in hand-saw frames, consisting of two arms connected bymeans ot a connecting-piece, which on one side of the connecting-piecehold the saw-claws and on the other side oi' the connecting-piece areprovided with a svvingable lever for the tentritatiing,I ot' thesaWblade, said connecting piece being provided with a plurality oflongitudinal grooves for holding additional loose sa-W- lades, saidconnecting-piece being provided With a depression, in which the free endo1a the tensioning' lever is held, said Yfree end thereby preventing thesaw-blades in said grooves from falling out of them.

y ln witness whereof, we have hereunto signed our names.

KARL AUGUST WAHLBERG.

GUSTAV ADLF VOLMER WAHLBERG.

